private MorphVertex GetVertexByClick(MorphTriangle triangle, Vector3 clickPoint)
{
float distance1 = Vector3.Distance(triangle.Vertex1.Vertex, clickPoint);
float distance2 = Vector3.Distance(triangle.Vertex2.Vertex, clickPoint);
float distance3 = Vector3.Distance(triangle.Vertex3.Vertex, clickPoint);
if (distance1 < distance2 && distance1 < distance3)
{
return(triangle.Vertex1);
}
if (distance2 < distance1 && distance2 < distance3)
{
return(triangle.Vertex2);
}
if (distance3 < distance1 && distance3 < distance2)
{
return(triangle.Vertex3);
}
return(triangle.Vertex1);
}
/// <summary>
/// 创建变形动画
/// </summary>
private void GenerateMorphAnimation()
{
GUI.backgroundColor = Color.cyan;
if (GUILayout.Button("Generate Morph Animation"))
{
Mesh mesh = Instantiate(_meshFilter.sharedMesh);
mesh.name = _meshFilter.sharedMesh.name + "(Morph)";
string path = "Assets/" + mesh.name + ".asset";
AssetDatabase.CreateAsset(mesh, path);
AssetDatabase.SaveAssets();
Mesh meshAsset = AssetDatabase.LoadAssetAtPath(path, typeof(Mesh)) as Mesh;
//生成蒙皮网格组件
_skinnedMeshRenderer = _meshFilter.transform.GetComponent <SkinnedMeshRenderer>();
if (_skinnedMeshRenderer)
{
DestroyImmediate(_skinnedMeshRenderer);
}
_skinnedMeshRenderer = _meshFilter.transform.gameObject.AddComponent <SkinnedMeshRenderer>();
_skinnedMeshRenderer.hideFlags = HideFlags.HideInInspector;
_skinnedMeshRenderer.sharedMesh = meshAsset;
_skinnedMeshRenderer.rootBone = _meshFilter.transform;
_skinnedMeshRenderer.sharedMaterial = _meshRenderer ? _meshRenderer.sharedMaterial : null;
_skinnedMeshRenderer.enabled = true;
//生成网格碰撞器
MeshCollider mc = _meshFilter.transform.GetComponent <MeshCollider>();
if (mc)
{
DestroyImmediate(mc);
}
mc = _meshFilter.transform.gameObject.AddComponent <MeshCollider>();
mc.sharedMesh = meshAsset;
mc.enabled = true;
//生成变形动画组件
MorphAnimation ma = _meshFilter.transform.GetComponent <MorphAnimation>();
if (ma)
{
DestroyImmediate(ma);
}
ma = _meshFilter.transform.gameObject.AddComponent <MorphAnimation>();
ma.IsApprove = true;
//处理顶点
ma.Vertexs = new List <MorphVertex>();
List <int> repetitionVertices = new List <int>();
for (int i = 0; i < meshAsset.vertices.Length; i++)
{
EditorUtility.DisplayProgressBar("请稍等", "处理顶点（" + i + "/" + meshAsset.vertices.Length + "）......", 1.0f / meshAsset.vertices.Length * i);
if (repetitionVertices.Contains(i))
{
continue;
}
List <int> verticesGroup = new List <int>();
verticesGroup.Add(i);
for (int j = i + 1; j < meshAsset.vertices.Length; j++)
{
if (meshAsset.vertices[i] == meshAsset.vertices[j])
{
verticesGroup.Add(j);
repetitionVertices.Add(j);
}
}
ma.Vertexs.Add(new MorphVertex(_meshFilter.transform.localToWorldMatrix.MultiplyPoint3x4(meshAsset.vertices[i]), verticesGroup));
}
//处理三角面
List <int> allTriangles = new List <int>(meshAsset.triangles);
ma.Triangles = new List <MorphTriangle>();
for (int i = 0; (i + 2) < allTriangles.Count; i += 3)
{
EditorUtility.DisplayProgressBar("请稍等", "处理三角面（" + i + "/" + allTriangles.Count + "）......", 1.0f / allTriangles.Count * i);
MorphVertex mv1 = GetVertexByIndex(ma.Vertexs, allTriangles[i]);
MorphVertex mv2 = GetVertexByIndex(ma.Vertexs, allTriangles[i + 1]);
MorphVertex mv3 = GetVertexByIndex(ma.Vertexs, allTriangles[i + 2]);
MorphTriangle mt = new MorphTriangle(ma.Triangles.Count, ref mv1, ref mv2, ref mv3);
ma.Triangles.Add(mt);
}
//默认生成一条骨骼（根骨骼）
Transform[] bones = new Transform[1];
Matrix4x4[] bindPoses = new Matrix4x4[1];
GameObject go = new GameObject("BoneRoot");
go.AddComponent <MorphBone>();
go.GetComponent <MorphBone>().hideFlags = HideFlags.HideInInspector;
go.hideFlags = HideFlags.HideInHierarchy;
bones[0] = go.transform;
bones[0].SetParent(_skinnedMeshRenderer.transform);
bones[0].localPosition = Vector3.zero;
bones[0].localRotation = Quaternion.identity;
bindPoses[0] = bones[0].worldToLocalMatrix * _skinnedMeshRenderer.transform.localToWorldMatrix;
_skinnedMeshRenderer.bones = bones;
_skinnedMeshRenderer.sharedMesh.bindposes = bindPoses;
EditorUtility.ClearProgressBar();
if (_meshFilter.transform.GetComponent <Collider>() != null)
{
_meshFilter.transform.GetComponent <Collider>().enabled = false;
}
if (_meshRenderer)
{
_meshRenderer.enabled = false;
_meshRenderer.hideFlags = HideFlags.HideInInspector;
}
DestroyImmediate(_meshFilter);
}
}
